<template>
    <div>demo</div>
</template>

<script>
export default {
    name: '',
    components: {
    },
    data() {
        return {}
    },
    created() {
    },
    mounted() {
        console.log('this.$demo == ', this.$demo)
        this.$demo.say('你好')
        this.$demo.a = 2
        console.log('this.$demo == ', this.$demo)

    },
    methods: {},
}
</script> 

<style scoped></style>
